[U-Boot] Pull request: u-boot-net.git master

[Tom Rini]

On Wed, May 08, 2019 at 10:45:50PM +0000, Vladimir Oltean wrote:
> On 5/9/19 1:42 AM, Tom Rini wrote:
> > On Wed, May 08, 2019 at 10:40:57PM +0000, Vladimir Oltean wrote:
> >> On 5/9/19 1:24 AM, Joe Hershberger wrote:
> >>> On Tue, May 7, 2019 at 5:15 PM Joe Hershberger <joe.hershberger at ni.com> wrote:
> >>>>
> >>>> Hi Tom,
> >>>>
> >>>> The following changes since commit 8d7f06bbbef16f172cd5e9c4923cdcebe16b8980:
> >>>>
> >>>> I rebased on your master and built for BB Black. DHCP seems to work fine.
> >>>> MLO also now fits again.
> >>>>
> >>>>     Merge branch 'master' of git://git.denx.de/u-boot-sh (2019-05-07 09:38:00 -0400)
> >>>>
> >>>> are available in the git repository at:
> >>>>
> >>>>     git://git.denx.de/u-boot-net.git master
> >>>>
> >>>> for you to fetch changes up to 8d0c6858455e89b089222a08d55ff711681ca011:
> >>>>
> >>>>     net: phy: micrel: Find Micrel PHY node correctly (2019-05-07 14:51:55 -0500)
> >>>>
> >>>> ----------------------------------------------------------------
> >>>> Carlo Caione (4):
> >>>>         net: phy: Add generic helpers to access MMD PHY registers
> >>>>         net: phy: ti: use generic helpers to access MMD registers
> >>>>         cmd: mdio: Switch to generic helpers when accessing the registers
> >>>>         net: phy: realtek: Introduce quirk to mark RXC not stoppable
> >>>>
> >>>> James Byrne (2):
> >>>>         net: phy: micrel: Use correct skew values on KSZ9021
> >>>>         net: phy: micrel: Find Micrel PHY node correctly
> >>>>
> >>>> Murali Karicheri (2):
> >>>>         ARM: k2g-gp-evm: update to rgmii pinmux configuration
> >>>>         ARM: k2g-ice: Add pinmux support for rgmii interface
> >>>>
> >>>> Pankaj Bansal (1):
> >>>>         drivers: net: ldpaa_eth: fix resource leak
> >>>>
> >>>> Siva Durga Prasad Paladugu (2):
> >>>>         net: phy: Reloc next and prev pointers inside phy_drivers
> >>>>         net: phy: Fix return value check phy_probe
> >>>>
> >>>> Valentin-catalin Neacsu (1):
> >>>>         net: phy: aquantia: Set only autoneg on in register 4.c441
> >>>>
> >>>> Vladimir Oltean (6):
> >>>>         net: phy: ar803x: Address packet drops at low traffic rate due to SmartEEE feature
> >>>>         net: phy: ar803x: Make RGMII Tx delays actually configurable for AR8035
> >>>>         net: phy: ar803x: Use common functions for RGMII internal delays
> >>>>         net: phy: ar803x: Clarify the configuration of the CLK_25M output pin
> >>>>         net: phy: ar803x: Explicitly disable RGMII delays
> >>>
> >>> Tom, this [1] is the patch that is breaking the evm. It doesn't affect
> >>> BB Black because it uses an SMSC phy, where as this evm uses an
> >>> AR8031/AR8033.
> >>>
> >>> Is it possible the device tree [2] is wrong for the board? It lists
> >>> 'phy-mode = "rgmii-txid";', so that means that with this patch the RX
> >>> delay is now being disabled.
> >>>
> >>> Any thoughts, Vladimir?
> >>>
> >>> Thanks,
> >>> -Joe
> >>>
> >>> [1] b3224e0f7e - "net: phy: ar803x: Explicitly disable RGMII delays"
> >>> [2] arch/arm/dts/am335x-evm.dts
> >>>
> >>>>         net: phy: ar803x: Clarify the intention of ar8021_config
> >>>>
> >>>>    arch/arm/dts/sama5d3xcm.dtsi                    |  32 +++---
> >>>>    arch/arm/dts/sama5d3xcm_cmp.dtsi                |  32 +++---
> >>>>    arch/arm/dts/socfpga_arria5_socdk.dts           |   4 +-
> >>>>    arch/arm/dts/socfpga_cyclone5_is1.dts           |   4 +-
> >>>>    arch/arm/dts/socfpga_cyclone5_socdk.dts         |   4 +-
> >>>>    arch/arm/dts/socfpga_cyclone5_sockit.dts        |   4 +-
> >>>>    arch/arm/dts/socfpga_cyclone5_vining_fpga.dts   |   4 +-
> >>>>    board/ti/ks2_evm/mux-k2g.h                      |  36 +++----
> >>>>    cmd/mdio.c                                      |  27 +++--
> >>>>    doc/device-tree-bindings/net/micrel-ksz90x1.txt |  27 +++++
> >>>>    drivers/net/ldpaa_eth/ldpaa_eth.c               |   1 +
> >>>>    drivers/net/phy/Kconfig                         |  41 ++++++++
> >>>>    drivers/net/phy/aquantia.c                      |   7 +-
> >>>>    drivers/net/phy/atheros.c                       | 128 ++++++++++++++++-------
> >>>>    drivers/net/phy/micrel_ksz90x1.c                |  24 ++++-
> >>>>    drivers/net/phy/phy.c                           |  21 +++-
> >>>>    drivers/net/phy/realtek.c                       |  19 ++++
> >>>>    drivers/net/phy/ti.c                            | 130 +++++-------------------
> >>>>    include/phy.h                                   |  70 +++++++++++++
> >>>>    19 files changed, 394 insertions(+), 221 deletions(-)
> >>>>
> >>>> Thanks!
> >>>> -Joe
> >>>> _______________________________________________
> >>>> U-Boot mailing list
> >>>> U-Boot at lists.denx.de
> >>>> https://lists.denx.de/listinfo/u-boot
> >>>
> >>
> >> Hi Joe, Tom,
> >>
> >> It sounds like what Joe pointed to (my patch) has a high chance of
> >> causing link failure.
> >> If the board is relying on RX delays in the Atheros PHY to ensure
> >> correct RGMII timing budget, then for sure it was working before and now
> >> it is broken. In that case, it was working by mistake; the DT blob is
> >> broken and should be corrected.
> >> Sorry for the trouble this has caused.
> > 
> > How is this handled in the Linux kernel and/or why doesn't it fail
> > there?
> 
> On the latest net-next, it's handled the same: disable everything and 
> enable only what's specified in phy-mode. I didn't keep track of older 
> versions.

So you would expect the network to be broken on net-next with this DTS?
Because that's not allowed...

-- 
Tom
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